Unaudited Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenues, net	$ 661,093	$ 621,825
Expenses:
Processing	233,703	129,114
Selling	55,859	49,261
General and administrative	106,110	92,784
Depreciation and amortization	64,476	67,445
Other operating, net	(38)	(955)
Operating income	200,983	284,176
Investment loss	2,371	15,660
Other (income) expense, net	(9,366)	220
Interest expense, net	35,679	39,055
Total other expense	28,684	54,935
Income before income taxes	172,299	229,241
Provision for income taxes	25,239	57,134
Net income	$ 147,060	$ 172,107
Earnings per share:
Basic earnings per share (in dollars per share)	$ 1.73	$ 2.00
Diluted earnings per share (in dollars per share)	$ 1.67	$ 1.93
Weighted average shares outstanding:
Basic (in shares)	84,902	85,941
Diluted (in shares)	88,205	89,244